//
//  FontListController.m
//  iPadDev01
//
//  Created by smu on 11-7-29.
//  Copyright 2011年 duk. All rights reserved.
//

#import "FontListController.h"


@implementation FontListController

@synthesize fonts, selectedFontName, container;

- (id)initWithStyle:(UITableViewStyle)style
{
    self = [super initWithStyle:style];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)dealloc
{
    self.fonts = nil;
    self.selectedFontName = nil;
    [super dealloc];
}

- (void)didReceiveMemoryWarning
{
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];
    
    // Release any cached data, images, etc that aren't in use.
}

#pragma mark - View lifecycle

- (void)viewDidLoad
{
    [super viewDidLoad];
    //遍历包含所有字体族名称的字符串数组，获得属于每个族的字体，然后将他们添加到一个数组中
    NSArray *familyNames = [UIFont familyNames];
    NSMutableArray *fontNames = [NSMutableArray array];
    for (NSString *family in familyNames) {
        [fontNames addObjectsFromArray:[UIFont fontNamesForFamilyName:family]];
    }
    self.fonts = [fontNames sortedArrayUsingSelector:@selector(compare:)];
}

- (void)viewDidUnload
{
    self.fonts = nil;
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    //尝试查找所选字体在数组中的位置，然后滚动到表视图以显示该字体
    NSInteger fontIndex = [self.fonts indexOfObject:self.selectedFontName];
    if (fontIndex != NSNotFound) {
        NSIndexPath *indexPath = [NSIndexPath indexPathForRow:fontIndex inSection:0];
        [self.tableView scrollToRowAtIndexPath:indexPath
                              atScrollPosition:UITableViewScrollPositionMiddle
                                      animated:NO];
    }
}

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
}

- (void)viewWillDisappear:(BOOL)animated
{
    [super viewWillDisappear:animated];
}

- (void)viewDidDisappear:(BOOL)animated
{
    [super viewDidDisappear:animated];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
	return YES;
}

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
#warning Potentially incomplete method implementation.
    // Return the number of sections.
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
#warning Incomplete method implementation.
    // Return the number of rows in the section.
    return [fonts count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Cell";
    
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
    }
    
    // Configure the cell...
    NSString *fontName = [fonts objectAtIndex:indexPath.row];
    cell.textLabel.text = fontName;
    cell.textLabel.font = [UIFont fontWithName:fontName size:17.0];
    if ([self.selectedFontName isEqual:fontName]) {
        cell.accessoryType = UITableViewCellAccessoryCheckmark;
    } else {
        cell.accessoryType = UITableViewCellAccessoryNone;
    }
    
    return cell;
}

/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
    // Return NO if you do not want the specified item to be editable.
    return YES;
}
*/

/*
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        // Delete the row from the data source
        [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
    }   
    else if (editingStyle == UITableViewCellEditingStyleInsert) {
        // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
    }   
}
*/

/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath
{
}
*/

/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
    // Return NO if you do not want the item to be re-orderable.
    return YES;
}
*/

#pragma mark - Table view delegate
//记住用户所选择的字体，更新受影响的记录显示方式
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    // Navigation logic may go here. Create and push another view controller.
    /*
     <#DetailViewController#> *detailViewController = [[<#DetailViewController#> alloc] initWithNibName:@"<#Nib name#>" bundle:nil];
     // ...
     // Pass the selected object to the new view controller.
     [self.navigationController pushViewController:detailViewController animated:YES];
     [detailViewController release];
     */
    // determine two affected table columns: the one that was selected before, and the one that's selected now.
    NSInteger previousFontIndex = [self.fonts indexOfObject:self.selectedFontName];
    // don't do any updating etc if the user touched the already-selected row
    if (previousFontIndex != indexPath.row) {
        NSArray *indexPaths = nil;
        if (previousFontIndex!= NSNotFound) {
            NSIndexPath *previousHighlightedIndexPath = [NSIndexPath indexPathForRow:previousFontIndex inSection:0];
            indexPaths = [NSArray arrayWithObjects:indexPath, previousHighlightedIndexPath, nil];
        } else {
            indexPaths = [NSArray arrayWithObjects:indexPath, nil];
        }
        
        // notice the new selection
        self.selectedFontName = [self.fonts objectAtIndex:indexPath.row];
        
        // then reload
        [self.tableView reloadRowsAtIndexPaths:indexPaths
                              withRowAnimation:UITableViewRowAnimationFade];
        [[NSNotificationCenter defaultCenter] postNotificationName:FontListControllerDidSelect object:self];
    }
}

@end
